I came, I saw, I conquered; so said Julius Caesar, after a particularly swift triumph in battle. Which manufacturer will be next to come to WorldSBK, size it up fully and then conquer it - of those currently residing outside the WorldSBK compound at least - is a question without urgent need of an answer. There appear to be no prime candidates standing at the gates for starters.
Right now expansion beyond the known superbike world is not that important for WorldSBK either, not with five important factories competing for honours at a global level, all with bikes that are fully competitive. Or at least would be fully competitive if they all reached their very similar full technical potential as consistently as Jonathan Rea and his crew from Kawasaki have, for six years in a row. In all measurable terms WorldSBK has never been as wide open and accessible to even a new or returning manufacturer looking for instant glory as it is right now. So it would be a good time to join the party.